The formation and viscoelasticity of pore-throat scale emulsion in porous media
The emulsion process in reservoirs was simulated by core displacement experiment, and the formation mechanisms of emulsion were studied by visualization core displacement experiment. The particle size distribution of formed emulsion at different transport distances, emulsifier concentrations or inje...
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KeAi Communications Co., Ltd.
2017-02-01
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doaj-24d031b843024d93867a760a9946fedd2021-03-02T10:37:38ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042017-02-01441111118The formation and viscoelasticity of pore-throat scale emulsion in porous mediaYazhou ZHOU0Demin WANG1Zhipeng WANG2Rui CAO3College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China; Corresponding authorDaqing Oilfield Company Limited, Daqing 163000, ChinaThe NO.5 Oil Production Plant of Daqing Oilfield Company Limited, Daqing 163000, ChinaThe NO.5 Oil Production Plant of Daqing Oilfield Company Limited, Daqing 163000, ChinaThe emulsion process in reservoirs was simulated by core displacement experiment, and the formation mechanisms of emulsion were studied by visualization core displacement experiment. The particle size distribution of formed emulsion at different transport distances, emulsifier concentrations or injection rates was measured, and the condition of forming stable emulsion of pore-throat scale were analyzed. By measuring the viscosity, the storage modulus and the loss modulus of the formed emulsion, viscoelasticity of emulsion was studied. The study shows that the formation mechanisms are mainly the snapping action of residual oil and the shearing action of emulsifier solution. When the migration distance is greater than 1/3 times the injector-producer spacing, the emulsifier concentration is between 0.4% and 0.5% and the injection rate is between 0.3 mL/min and 0.4 mL/min, the pore-throat scale emulsion with favorably stability can be formed. The viscosity is between 48.6 mP·s and 70.3 mP·s when the shear rate is 7.34 s−1 and the emulsifier concentration is between 0.4% and 0.5%. The storage modulus and loss modulus of emulsion increase with the emulsifier concentration increasing, and the viscoelasticity of emulsion is more favorably. Key words: enhanced oil recovery, emulsifier, emulsion, forming condition, particle size, viscoelasticityhttp://www.sciencedirect.com/science/article/pii/S1876380417300149 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yazhou ZHOU Demin WANG Zhipeng WANG Rui CAO |
spellingShingle |
Yazhou ZHOU Demin WANG Zhipeng WANG Rui CAO The formation and viscoelasticity of pore-throat scale emulsion in porous media Petroleum Exploration and Development |
author_facet |
Yazhou ZHOU Demin WANG Zhipeng WANG Rui CAO |
author_sort |
Yazhou ZHOU |
title |
The formation and viscoelasticity of pore-throat scale emulsion in porous media |
title_short |
The formation and viscoelasticity of pore-throat scale emulsion in porous media |
title_full |
The formation and viscoelasticity of pore-throat scale emulsion in porous media |
title_fullStr |
The formation and viscoelasticity of pore-throat scale emulsion in porous media |
title_full_unstemmed |
The formation and viscoelasticity of pore-throat scale emulsion in porous media |
title_sort |
formation and viscoelasticity of pore-throat scale emulsion in porous media |
publisher |
KeAi Communications Co., Ltd. |
series |
Petroleum Exploration and Development |
issn |
1876-3804 |
publishDate |
2017-02-01 |
description |
The emulsion process in reservoirs was simulated by core displacement experiment, and the formation mechanisms of emulsion were studied by visualization core displacement experiment. The particle size distribution of formed emulsion at different transport distances, emulsifier concentrations or injection rates was measured, and the condition of forming stable emulsion of pore-throat scale were analyzed. By measuring the viscosity, the storage modulus and the loss modulus of the formed emulsion, viscoelasticity of emulsion was studied. The study shows that the formation mechanisms are mainly the snapping action of residual oil and the shearing action of emulsifier solution. When the migration distance is greater than 1/3 times the injector-producer spacing, the emulsifier concentration is between 0.4% and 0.5% and the injection rate is between 0.3 mL/min and 0.4 mL/min, the pore-throat scale emulsion with favorably stability can be formed. The viscosity is between 48.6 mP·s and 70.3 mP·s when the shear rate is 7.34 s−1 and the emulsifier concentration is between 0.4% and 0.5%. The storage modulus and loss modulus of emulsion increase with the emulsifier concentration increasing, and the viscoelasticity of emulsion is more favorably. Key words: enhanced oil recovery, emulsifier, emulsion, forming condition, particle size, viscoelasticity |
url |
http://www.sciencedirect.com/science/article/pii/S1876380417300149 |
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